Section: New Results

Pseudo-rigid movements for flexible multi-finger interactions

Participants : Laurent Grisoni [correspondant] , Yosra Rekik, Nicolas Roussel.

Multi-touch interaction requires a trade-off between users' desires and capabilities and gesture recognition constraints. Current approaches to that problem lack flexibility. The number of fingers used for a gesture usually plays a key part in the recognition process, for example. To increase the flexibility of this process, we proposed the use of pseudo-rigid movements [27] . We showed how these movements can be determined in real time from the contact information usually available. We explained how they allow to free the recognition process from the number of fingers used and to move towards multi-movement gestures, independent or coordinated. We also presented an interaction technique that takes advantage of this increased flexibility.